Type-writing machine.



No. 863,070. I PATENTED AUG. 13, 1907. c. E. KELLEY.

TYPE WRITING MACHINE.

APPLIOATION FILED MAY 29. 1907.

UNITED STATES ATENT OFEICC.

CHARLES E. KELLEY, OF OLARKSBURG, WEST VIRGINIA, ASSIGNOR TO UNDERWOOD TYPE- WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

TYPE-WRITING MAGHINE.

Specification of Letters Patent.

l mented Aug. 13, 1907,

Application filed May 29, 1907. Serial No. 376,235.

To all whom it may concern:

the United States, residing in Clarksburg, in the county of Harrison and State of West Virginia, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

, This invention relates to means for rotating the platens oi typewriting machines through relatively long arcs first backwardly then forwardly, 'the first move ment to bring the platen into position for insertion of the bill and the return motion to bring the first line of writing on the bill to the printing point. I

Ih,'e invention is adapted for writing bills and other documents where it is desired to preserve carbon copies of several such documents on a single long record sheet. In accordance with m'y invention the platen. may be rotated line byline by means of the usual line-space de vices, and may also at any time be freely rotated either backwardly or forwardly to any desired extent; but when it is desired to give the platen the peculiar backward and forward movements required in billing, the handle is grasped, and-by a single stroke two gears are caused to engage and rotate the platen backwardly- Thenthe new bill is inserted, and by means of areturn stroke of said handle the platen is turned forwardly to its initial position, thereby -bringi ngthe first line or writing on'the bill toltli'e printing point and avoiding waste of space upon the long record'sheet which remains in the machine;-

This invention is in the nature of an improvement uponthe devices disclosed in the application of Allin In the accompanying drawings, Figure lie a' seetional rear elevation illustrating the mechanismseen at Figs. 3 and 4.. Fig. 2 is apart sectional viewTillustrating the platen axleand some oilthe parts thereon, Figlfiiis perspective wiew illustrating the crank having been, swung forwardly to rotate the platen, thepranlr and platen being arrested by the engagement oil-the crank, stop with-thestationary stop. 4 is an endfelevation showing the crank and gear in normalposition;

leaving the platen free for independent rotation,

.5. cylindricalplaten'l is revolubly aunted upone'n axle 2, the' latter journaled at its'ends in a platen comprising the usual end bars 3 Connected by a plate or papershelf, seen'at; 4. 'The types S strike upon the front side of the platen} Thelatter is provided with a line space wheel 6 having a detent 7 and operated step ion is operated by an internal gear segment 12 which isnormally out of'mesh with the pinion, as seen at Fig.

l, but may beswung about a stud 14 by means of a crank 15 until it not only meshes with but rotates said pinion, as seen at Fig. 3. The gear 12 is formed upon a segmental plate 16, which has a gurved slot 17 to accommodate the pinion 11, the teeth of said gear 12 being out upon the outer edge of said slot. The handle or crank 15 is fixed upon that part of the plate 16 which borders said gear 12, and extends outwardly or radially therefrom, so that it does not encounter the platen axle 2 or the pinion l1 thereon, as will be understood by ref erence to Fig. 3. The gear 12 is preferably of suflicient length to effect one or more complete revolutions of the platen 1 by means of a'single stroke of the crank 15, the latter being provided with a suitable finger-piece 18.

The gear plate 16 is provided with a 'hub 19, which turns upon a headed stud 20, the latter secured by a screw 21 to a sheet metal bracket 22, secured by screws 23 upon the platen frame end 3. A nut 24 upon said screw holds the stud rigidly against the outer vertical face of the plate 22. A-wa-sher 25 is placed between the nut 2a and the inner vertical face oi'the plate 22. The shank of the screw 21 passes through a slot 26 in said platewhich admits of adjustment of the stud 20 towards and away from the platen axle 2,so as to secure proper engagement of the gears orsubstitiition of pinions 11 of difiierent sizes. The gear plate 16 isheldby a yieldingdetent 27. in the normal position seen at Fig. 4;, the gear being then out oi'gnesh with the pinion, so that the latter may ber'otated independently iorward and backward together with-the platen. It 'willsgbe seen that the stud 20 is in rear of the platen axle 2 and parallel therewith. I

Uponatlie segment-plate 16 is provided a'projecting stop 23, and in the path thereof is mounted a stationary stop-29130 limit the initialmovementof'the plate 16 which rotates the platen backwardly. Thc length of the stroke-oi the plate maybe regulated, the stop 29 for tliispurpose being'mounted upon an arm 29 "which is pivoted by means of a-hub 39' upon the hub 19. A

segmentalfor crescent shaped rack 31 is fixed by means 0f studs 3211350 1 the plate-22, and is provided upon its peripheral edge with teeth 33'to be engaged bya pin 34 mountedin a head'35carriedupon the arm 29/, said pin having a fingerepiece 35-, whereby it may be withdrawn from engagement'with the teeth 33, and the arm adjusted along therack as desired, ',A spring 37 holds the pinin engagement with the teeth 33. The stop rack 33 is curved concentrically with the axle 2.

In operation, the usual long recordsheet and short bill head are introduced together and rolled forwardly around the platen, and the' first bill is written in the usual manner. Then the bill may be withdrawn without disturbing the position of the record sheet in the platen, the usual pressure rolls 38 being released for this purpose; then by grasping the handle 18 and swing? ing it to the left at Fig. 3, that is, in the opposite direction from the line spacing movement of the platen, the

gear 12 is swung endwise into mesh with the pinion 11, and thereby the platen is rotated backwardly until the segment 12 and platen lare arrested by the engagement of-the stop 28' with the stop 29. .The gears and platen remain in this position while a fresh bill is inserted, and then the handle 18 is swung to theright thereby rotating the platen iorwardly'to its initial position while the gear 12 swings out of mesh with the pinion 11, thereby leaving the platen free to be rotated by the line spacing devices 6, 7, 8, or the usual hand wheels 39: The spring detent 7, acting on the wheel 6, serves to hold the pinion 11 always in proper position for meshing with the leading teeth in the rack 12, when the latter is swung forwardly around the pivot 20.

Variationsmay be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. The combination witha revoluble .platen and a set of single-line spacing devices therefor, of a pinion on the platen axle, an internal gear segment normally discon nected from said pinion and pivpted to turn op an axis parallel with the platen and movable into mesh therewith, and of suflicient lengthto efiect an entire revolution of the platen, an adjustable stop for limiting the initial stroke of said gear, and a handle or crank upon said gear.

2. The combination witlra revoluble platen and aset of single-line-spacing devices therefor, of a pinion on the platen axle. .an internal gear segment pivoted back of the platen axle, andhormally disconnected from said pinion and movable into mesh therewith, and of sufficient length to eit'ect an entire revolution of the platen, a crank nor: mally extending upwardly gear, and an adjustable stop for of said gear and platen.

3. The combination with a revoluble platen, of a pinion on the platen-axle,.n plate mounted to turn on an axis parallel with the platen and having a slot, the outer edge 01 limiting. the initial stroke the slot having teeth forming an internal gear normally out of mesh with said pinion but movable intomesh therewith, and a crank or handle extending outwardly from the part ofsaid plate which borders said segment.

4. The combination with a revoluble platen, of a pinion on the p la'te1i"axle an internal gear segment normally disand rearwardly from the said connected from said pinion and pivoted to turn on an axis parallel with the platen, and movable into mesh therewith, a stop arm pivoted to turn about the axis of said internal geanand a segmental rack for said stop arm, said rack concentric with the axis ofsaid internal gear.

5. In a typewriting machine, the combination of a platen having an axle, a pinion secured upon said axle, a platen frame, a stud upon said platen frame and parallel with said axle, a plate having a hub journaled upon said stud and having a curved slot, teeth being outer edge of the slot to constitute an internal gear which is normally out of mesh with said pinion, but movable into mesh therewith by a pivotal movement of said plate, a prank or handle extending from the part of said plate which boriiers'said segment. an arm revoluble upon said hub and curved to ,clear the axle of the platen. a stop carried upbn said arm, and a segmental rack concentric with said stud and fixed upon said platen frame,

6.- In a typewriting machine, the combination of a platen having an axle, a pinion secured upon said axle, a platen frame, a stud; upon said platen frame and parallel with said axle, a plate having a hub'journaled upon said stud and having a curved slot, teeth being formed upon the outer edge of the slot to constitute an internal gear which is'normally out of mesh with said pinion, but movable into mesh therewith by a pivotal movement of said plate, a crank or handle extending from the part of said plate which borders said segment, an arm r'evolnble upon said hub and curved to clear the axle of the platen, a stop car riecl upon said arm and a segmental rack concentric wit? said stud and fixed upon said platen frame; the stud being adjustable toward and from the platen axle.

7. In a typewriting machine, the combination of a platen having an axle, a platen frame, a stud upon said platen frame and parallel with said axle, a plate mounted to turn npon said stud and formed .with an internal gear normally out of. mesh with said pinion. but movable into mesh therewith by a pivotal movement of said plate, a se,,-

-mental rack-concentric with said stud and fixed upon said platen frame, and a stop adjustable along said rack.

8. In a typewrltinganachinc, the combination of a platen having an axle, a platen frame, a stud upon said platen frame and parallel with said axle, aplate mounted to turn upon said stud and having an internal gear normally out of mesh withsaid pinion, but movable into mesh therewith by a pivotal action of said plate, a crankpr handle upon said plate, and a yielding detent for holding said plate in normal position, and a stop for arresting the initial move. ment of the plate and platen.

1 CHARLES E. KELLEY.

' WI messes: i

G. P. SINGER, Jns. K. INGLE.

formed upon the 

